good idea, message easily understandable, on the other side, how many times did we see ads with this concept : evolution?
still good anyway, customers will find it kindda clever ( except geologists lol 'cause, oubvioulsy the ancient animals are not always what they show as a result of evolution ;) )

If evolution made animals smaller.. I'm pretty sure it wasn't because of parking spaces or petrol saving! This "size" difference evolution happened only with animals and has nothing to do with "smartness".

Technically, evolution almost always makes animals bigger. The dinosaurs evolved to their massive sizes over millions of years because they had overly abundant resources and only limited predators. Then they were wiped out by a asteroid. And life started over with more limited resources (less food due to different atmospheric conditions), thus current life on Earth isn't a big as it was before. So like a Smart car in a head on accident, these ads aren't quite as smart as they claim to be.